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/* Copyright (C) 2024 Camm Maguire */
#include "include.h"
#include "funlink.h"
#include "page.h"
DEFUN("SET-FUNCTION-ENVIRONMENT",object,fSset_function_environment,SI,2,2,NONE,OO,OO,OO,OO, \
(object f,object env),"") {
ufixnum n;
object x,*p;
if (type_of(f)!=t_function)
TYPE_ERROR(f,sLcompiled_function);
for (n=0,x=env;x!=Cnil;x=x->c.c_cdr,n++);
if (n++) {
{
BEGIN_NO_INTERRUPT;
p=(object *)alloc_relblock(n*sizeof(object));
END_NO_INTERRUPT;
}
*p++=(object)n;
f->fun.fun_env=p;
for (;env!=Cnil;env=env->c.c_cdr)
*p++=env;
}
RETURN1(f);
}
#define PADDR(i) ((void *)(((fixnum *)sSPinit->s.s_dbind->a.a_self)[Mfix(i)]))
#define POP_BITS(x_,y_) ({ufixnum _t=x_&((1<<y_)-1);x_>>=y_;_t;})
static object
make_fun(void *addr,object data,object call,object env,ufixnum argd,ufixnum sizes) {
object x;
x=alloc_object(t_function);
x->fun.fun_self=addr;
x->fun.fun_data=data;
x->fun.fun_argd=argd;
x->fun.fun_plist=call;/*FIXME*/
x->fun.fun_minarg=POP_BITS(sizes,6);
x->fun.fun_maxarg=POP_BITS(sizes,6);
x->fun.fun_neval =POP_BITS(sizes,5);
x->fun.fun_vv =POP_BITS(sizes,1);
x->fun.fun_env=def_env;
if ((void *)x->fun.fun_self==feval_src)
x->d.tt=2;
FFN(fSset_function_environment)(x,env);
return x;
}
#define GET_DATA(d_,a_) ((d_)!=Cnil ? (d_) : ((a_) && (a_)->s.s_dbind!=OBJNULL && type_of((a_)->s.s_dbind)==t_cfdata ? (a_)->s.s_dbind : 0))
DEFUN("FUNCTION-ENVIRONMENT",object,fSfunction_environment,SI,1,1,NONE,OO,OO,OO,OO,(object f),"") {
RETURN1(f->fun.fun_env[0]);
}
DEFUN("INIT-FUNCTION",object,fSinit_function,SI,7,7,NONE,OO,OO,OI,II, \
(object sc,object addr,object data,object env,\
fixnum key,fixnum argd,fixnum sizes),\
"Store a compiled function on SYMBOL whose body is in the VV array at \
INDEX, and whose argd descriptor is ARGD. If more arguments IND1, IND2,.. \
are supplied these are indices in the VV array for the environment of this \
closure.") {
object s,d,m,i,fun,c;
fixnum z;
m=sSPmemory;
m=m ? m->s.s_dbind : m;
m=m && m!=OBJNULL && type_of(m)==t_cfdata ? m : 0;
d=data!=Cnil ? data : m;
i=sSPinit;
i=i ? i->s.s_dbind : i;
if (is_text_addr(addr)||(get_pageinfo(addr)&&!is_bigger_fixnum(addr))||!i||i==OBJNULL)
s=addr;
else {
massert(type_of(addr)==t_fixnum);
s=i->v.v_self[fix(addr)];
}
z=type_of(sc)==t_cons && sc->c.c_car==sSmacro; /*FIXME limited no. of args.*/
sc=z ? sc->c.c_cdr : sc;
sc=type_of(sc)==t_function ? sc->fun.fun_plist : sc;
c=type_of(sc)==t_symbol ? Cnil : sc;
fun=make_fun(s,d,c,env,argd,sizes);
if (i && key>=0 && d)
set_key_struct((void *)i->v.v_self[key],d);
if (sc!=c) {
fSfset(sc,fun);
if (z) sc->s.s_mflag=TRUE;
}
return fun;
}
#ifdef STATIC_FUNCTION_POINTERS
object
fSinit_function(object x,object y,object z,object w,fixnum a,fixnum b,fixnum c) {
return FFN(fSinit_function)(x,y,z,w,a,b,c);
}
#endif
DEFUN("SET-KEY-STRUCT",object,fSset_key_struct,SI,1,1,NONE,OO,OO,OO,OO,(object key_struct_ind),
"Called inside the loader. The keystruct is set up in the file with \
indexes rather than the actual entries. We change these indices to \
the objects")
{ set_key_struct(PADDR(key_struct_ind),sSPmemory->s.s_dbind);
return Cnil;
}
#define mcollect(top_,next_,val_) ({object _x=MMcons(val_,Cnil);\
if (top_==Cnil) top_=next_=_x; \
else next_=next_->c.c_cdr=_x;})
static void
put_fn_procls(object sym,fixnum argd,fixnum oneval,object def,object rdef) {
unsigned int atypes=F_TYPES(argd) >> F_TYPE_WIDTH;
unsigned int minargs=F_MIN_ARGS(argd);
unsigned int maxargs=F_MAX_ARGS(argd);
unsigned int rettype=F_RESULT_TYPE(argd);
unsigned int i;
object ta=Cnil,na=Cnil;
for (i=0;i<minargs;i++,atypes >>=F_TYPE_WIDTH)
switch(maxargs!=minargs ? F_object : atypes & MASK_RANGE(0,F_TYPE_WIDTH)) {
case F_object:
mcollect(ta,na,def);
break;
case F_int:
mcollect(ta,na,sLfixnum);
break;
case F_shortfloat:
mcollect(ta,na,sLshort_float);
break;
case F_double_ptr:
mcollect(ta,na,sLlong_float);
break;
default:
FEerror("Bad sfn declaration",0);
break;
}
if (maxargs!=minargs)
mcollect(ta,na,sLA);
putprop(sym,ta,sSproclaimed_arg_types);
ta=na=Cnil;
if (oneval)
switch(rettype) {
case F_object:
ta=rdef;
break;
case F_int:
ta=sLfixnum;
break;
case F_shortfloat:
ta=sLshort_float;
break;
case F_double_ptr:
ta=sLlong_float;
break;
default:
FEerror("Bad sfn declaration",0);
break;
}
else
/* ta=MMcons(sLA,Cnil); */
ta=sLA;
putprop(sym,ta,sSproclaimed_return_type);
/* if (oneval) */
putprop(sym,Ct,sSproclaimed_function);
}
void
SI_makefun(char *strg, object (*fn) (/* ??? */), unsigned int argd) {
object sym = make_si_ordinary(strg);
ufixnum at=F_TYPES(argd)>>F_TYPE_WIDTH;
ufixnum ma=F_MIN_ARGS(argd);
ufixnum xa=F_MAX_ARGS(argd);
ufixnum rt=F_RESULT_TYPE(argd);
fSinit_function(sym,(void *)fn,Cnil,Cnil,-1,
rt | (at<<F_TYPE_WIDTH),ma|(xa<<6)|(0<<12)|(0<<17)|((xa>ma? 1 : 0)<<18));
/* fSfset(sym, fSmakefun(sym,fn,argd)); */
put_fn_procls(sym,argd,1,Ct,Ct);
}
void
LISP_makefun(char *strg, object (*fn) (/* ??? */), unsigned int argd) {
object sym = make_ordinary(strg);
ufixnum at=F_TYPES(argd)>>F_TYPE_WIDTH;
ufixnum ma=F_MIN_ARGS(argd);
ufixnum xa=F_MAX_ARGS(argd);
ufixnum rt=F_RESULT_TYPE(argd);
fSinit_function(sym,(void *)fn,Cnil,Cnil,-1,
rt | (at<<F_TYPE_WIDTH),ma|(xa<<6)|(0<<12)|(0<<17)|((xa>ma? 1 : 0)<<18));
put_fn_procls(sym,argd,1,Ct,Ct);
}
void
GMP_makefunb(char *strg, object (*fn)(),unsigned int argd,object p) {
object sym = make_gmp_ordinary(strg);
ufixnum at=F_TYPES(argd)>>F_TYPE_WIDTH;
ufixnum ma=F_MIN_ARGS(argd);
ufixnum xa=F_MAX_ARGS(argd);
ufixnum rt=F_RESULT_TYPE(argd);
fSinit_function(sym,(void *)fn,Cnil,Cnil,-1,
rt | (at<<F_TYPE_WIDTH),ma|(xa<<6)|((type_of(p)==t_symbol ? 0 : 1)<<12)|
(0<<17)|((xa>ma? 1 : 0)<<18));
put_fn_procls(sym,argd,1,sLinteger,p);
}
void
SI_makefunm(char *strg, object (*fn) (/* ??? */), unsigned int argd) {
object sym = make_si_ordinary(strg);
ufixnum at=F_TYPES(argd)>>F_TYPE_WIDTH;
ufixnum ma=F_MIN_ARGS(argd);
ufixnum xa=F_MAX_ARGS(argd);
ufixnum rt=F_RESULT_TYPE(argd);
fSinit_function(sym,(void *)fn,Cnil,Cnil,-1,
rt | (at<<F_TYPE_WIDTH),ma|(xa<<6)|(31<<12)|(1<<17)|((xa>ma? 1 : 0)<<18));
/* fSfset(sym, fSmakefun(sym,fn,argd)); */
put_fn_procls(sym,argd,0,Ct,Ct);
}
void
LISP_makefunm(char *strg, object (*fn) (/* ??? */), unsigned int argd) {
object sym = make_ordinary(strg);
ufixnum at=F_TYPES(argd)>>F_TYPE_WIDTH;
ufixnum ma=F_MIN_ARGS(argd);
ufixnum xa=F_MAX_ARGS(argd);
ufixnum rt=F_RESULT_TYPE(argd);
fSinit_function(sym,(void *)fn,Cnil,Cnil,-1,
rt | (at<<F_TYPE_WIDTH),ma|(xa<<6)|(31<<12)|(1<<17)|((xa>ma? 1 : 0)<<18));
/* fSfset(sym, fSmakefun(sym,fn,argd)); */
put_fn_procls(sym,argd,0,Ct,Ct);
}
DEFUN("INVOKE",object,fSinvoke,SI,1,ARG_LIMIT,NONE,OO,OO,OO,OO,(object x),
"Invoke a C function whose body is at INDEX in the VV array")
{ int (*fn)();
fn = (void *) PADDR(x);
(*fn)();
return Cnil;
}
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